Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
IBB vs IYE: how they differ
IBB and IYE hold 0% of their weight in the same names, and IYE returned more over the year.
iShares Biotechnology ETF and iShares U.S. Energy ETF.
What they hold in common
By the books each fund has filed, IBB and IYE hold 0% of their money in the same securities at the same weight.
| Holding | IBB | IYE |
|---|---|---|
| BLK CSH FND TREASURY SL AGENCY | 0.12% | 0.13% |
| USD CASH | 0.05% | 0.08% |
| Only in IBB | Only in IYE |
|---|---|
| VERTEX PHARMACEUTICALS 7.94% | EXXONMOBIL HOLDINGS CORP 22.32% |
| AMGEN INC 7.85% | CHEVRON 16.00% |
| GILEAD SCIENCES 7.44% | CONOCOPHILLIPS 6.77% |
| REGENERON PHARMACEUTICALS 5.92% | MARATHON PETROLEUM 4.68% |
| ARGENX SE ADR 3.78% | VALERO ENERGY CORP 4.62% |
| MODERNA 3.67% | PHILLIPS 66 4.20% |
| NATERA 3.30% | WILLIAMS 3.60% |
| REVOLUTION MEDICINES 2.87% | SLB 3.39% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Sep 10, 2026.
| IBB iShares Biotechnology ETF | IYE iShares U.S. Energy ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | iShares |
| What it is | Biotechnology | U.S. Energy |
| Total return, 1 year | +41.5% | +48.8% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +24.0 pts | +31.3 pts |
| Expense ratio | 0.44% | 0.37% |
| Already in the S&P 500 | 35.6% | 89.0% |
| Holdings | 233 | 43 |
IBB in plain words
IBB is an index equity fund tracking the Biotechnology. Over the year to Sep 11, 2026 it returned +41.5% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.44% a year. By its holdings filed for Sep 10, 2026, 36% of the fund by weight is stocks the S&P 500 also holds, across 233 positions, with the top ten at 47.5%. It sat 6.5% below its high of Aug 19, 2026 on Sep 11, 2026.
IYE in plain words
IYE is an index equity fund tracking the U.S. Energy. Over the year to Sep 11, 2026 it returned +48.8% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.37% a year. By its holdings filed for Sep 10, 2026, 89% of the fund by weight is stocks the S&P 500 also holds, across 43 positions, with the top ten at 71.3%.
Questions people ask
- Which returned more over the last year, IBB or IYE?
- In the year to Sep 13, 2026, with distributions reinvested, IBB returned +41.5% and IYE returned +48.8%, so IYE returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IBB or IYE?
- IBB charges 0.44% a year and IYE charges 0.37%, so IYE is cheaper. Fees come from each fund's prospectus.
- How much do IBB and IYE overlap with the S&P 500?
- By their latest filed holdings, 36% of IBB and 89% of IYE by weight is stocks the S&P 500 already holds. Between the two funds, 0% of their books are the same securities at the same weight.
Other comparisons
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Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, IBB against IYE, data as of Sep 13, 2026. https://etfiq.com/compare/any/ibb-vs-iye Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources